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Old 06-13-2015, 12:52 PM
plinker 22 plinker 22 is offline
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Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com  
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Default Sigma sear spring by www.sigmatrigger.com

I bought a SW9F 20 years ago, a few years later I sold it, couldn't stand the trigger.

Time went buy and I saw a SW9GVE (G is for the green frame) with stainless slide. I liked the looks, took a gamble that the trigger had been improved and brought it home with me.

After 3 trips to the range and maybe 100 rounds thru it, I grew tried of dealing with the 9.75 lb trigger so it found a home in the safe where it's been for 10 years.

Last weekend I decided to try to improve it. I didn't want to install a complete trigger kit, I just wanted a better defensive gun trigger, not a target trigger.

Parts I looked at were-
-Wolf, only had a reduced power striker spring
-Apex Tactical, full kit with a reduced striker spring
-Galloway Precision, full kit without a new striker spring, also offered a sear spring only
-www.sigmatrigger.com, sear spring only
-The youtube free Sigma trigger job where you remove both the pigtail and large sear spring without replacing them with something

I want a defense gun so I don't like the idea of a reduced power striker spring. The full kits were also more than I wanted, not looking for a target trigger. The free youtube job just didn't sound safe to me. So I decided on just a sear spring. After looking at the pics of the Galloway and sigmatrigger offerings, I went with sigmatrigger, it looked a bit stiffer than the Galloway and I didn't want to over do it.

The spring came yesterday, so after polishing the sear and barrel feed ramp, I installed the spring.
Results - from 9.75lb to 8.00lb, a 22% reduction, sigmatrigger claims as much as 50% but I live in the real world and make real world expectations.

I'm going to try it tomorrow along with a BG380 I recently purchased. If the BG 380 proves reliable and only needs a better trigger and if I order the kit Galloway offers for it, I'll add their Sigma sear spring to the order and try it, maybe I can lose another .25-.50lb off my SW9.
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Old 06-13-2015, 09:32 PM
plinker 22 plinker 22 is offline
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Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com  
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An update to my post.
Well my trigger pull checks had an error.

I checked a few other handguns with my RCBS gauge and found it coil binds at 9.75lb. I noticed this when checking my 5906 in DA, it coil bound and slipped off the trigger. The SA pull was 7.75lb.

The starting measurement on my SW9 is more than what I thought. The improvement was more than 22% with the sear spring change, how much I can't be sure of, best guess would be 25%.

Maybe it's time I buy a better gauge.
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Old 06-14-2015, 11:33 AM
sigma bob sigma bob is offline
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Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com Sigma sear spring by www.sigmatrigger.com  
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I also took out the pig tail spring and did the sear return spring i bought from Jeff at sigmatrigger. I love how my Sigma 9VE shoots now. I never measured the trigger pull and really don't care what it is as the gun shoots to my liking. I have ran 500 rounds of Federal Alum cased ammo thru my gun with zero problems. I also did my wife's Sigma 9VE but haven't haven't shot it yet.
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Old 08-10-2018, 08:00 PM
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staylor staylor is offline
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Sorry to resurrect an old post, but I recently sent my SW9VE sear assembly to sigmatrigger to get it polished and have the springs changed out. What a difference! The trigger was very gritty and now it's smooth as butter. I haven't measured it, but I'm guessing the pull is now somewhere in the 6 to 7 pound range and very smooth. It's now almost comparable to my G26.3 EDC, which I think has an exceptional trigger for a striker based pistol. Haven't had it to the range yet, but I'm very happy with the results so far. If anyone is hesitating about getting this done - don't. Jeff will take very good care of you.

Last edited by staylor; Today at 10:14 AM.
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